蟒蛇：桂错误消息

Question

我努力学习GUI实现，其中包括我的UI文件到我的Python脚本：

from PySide.QtGui import * 
import sys 
import MultiTool_widget_ui 

'''class MainDialog (QDialog, MultiTool_widget_ui.Ui_Form): 
    def __init__(self): 
     self.setupUi(MainDialog)''' 

app = QApplication(sys.argv) 
w = MultiTool_widget_ui.Ui_Form() 
#w = MainDialog() 
w.setupUi(QDialog) 
w.show() 
app.exec_() 

执行，我收到此错误信息：

Traceback (most recent call last): File "C:\Users\jhofmann\workspace\Testumgebung\GUI.py", line 17, in w.setupUi(QDialog) File "C:\Users\jhofmann\workspace\Testumgebung\MultiTool_widget_ui.py", line 14, in setupUi Form.setObjectName("Form") TypeError: descriptor 'setObjectName' requires a 'PySide.QtCore.QObject' object but received a 'str'

指向这个代码行中的“setupUi” - ui文件中的方法：

from PySide import QtCore, QtGui 

class Ui_Form(object): 
    def setupUi(self, Form): 
     Form.setObjectName("Form") <--HERE! 
     Form.resize(400, 300) 
     self.lcdNumber = QtGui.QLCDNumber(Form) 
     self.lcdNumber.setGeometry(QtCore.QRect(0, 110, 64, 23)) 
     self.lcdNumber.setObjectName("lcdNumber") 
     self.pushButton = QtGui.QPushButton(Form) 
     self.pushButton.setGeometry(QtCore.QRect(70, 110, 75, 23)) 
     self.pushButton.setObjectName("pushButton") 

     self.retranslateUi(Form) 
     QtCore.QMetaObject.connectSlotsByName(Form) 

原因是什么？我用PY 3.4

（注释的块，来自视频教程的那些）

Answer 1

您正在尝试一个类的对象传递给setupUi，当它期待一个实例类。试试这个：

from PySide.QtGui import * 
import sys 
import MultiTool_widget_ui 

class MainDialog (QDialog, MultiTool_widget_ui.Ui_Form): 
    def __init__(self): 
     super(MainDialog, self).__init__() 
     self.setupUi(self) 

app = QApplication(sys.argv) 
w = MainDialog() 
w.show() 
app.exec_() 

注：上述多继承方法，在Qt Designer中定义的所有部件最终成为顶级部件的属性。所以，如果你加入Qt设计一个按钮叫pushButton，你可以一个插槽连接到它是这样的：

class MainDialog (QDialog, MultiTool_widget_ui.Ui_Form): 
    def __init__(self): 
     ... 
     self.pushButton.clicked.connect(self.handleButton) 

    def handleButton(self): 
     print('Hello World')